LXR qemu/util/hexdump.c

   1/*
   2 * Helper to hexdump a buffer
   3 *
   4 * Copyright (c) 2013 Red Hat, Inc.
   5 * Copyright (c) 2013 Gerd Hoffmann <kraxel@redhat.com>
   6 * Copyright (c) 2013 Peter Crosthwaite <peter.crosthwaite@xilinx.com>
   7 * Copyright (c) 2013 Xilinx, Inc
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2.  See
  10 * the COPYING file in the top-level directory.
  11 *
  12 * Contributions after 2012-01-13 are licensed under the terms of the
  13 * GNU GPL, version 2 or (at your option) any later version.
  14 */
  15
  16#include "qemu/osdep.h"
  17#include "qemu-common.h"
  18
  19void qemu_hexdump_line(char *line, unsigned int b, const void *bufptr,
  20                       unsigned int len, bool ascii)
  21{
  22    const char *buf = bufptr;
  23    int i, c;
  24
  25    if (len > QEMU_HEXDUMP_LINE_BYTES) {
  26        len = QEMU_HEXDUMP_LINE_BYTES;
  27    }
  28
  29    line += snprintf(line, 6, "%04x:", b);
  30    for (i = 0; i < QEMU_HEXDUMP_LINE_BYTES; i++) {
  31        if ((i % 4) == 0) {
  32            *line++ = ' ';
  33        }
  34        if (i < len) {
  35            line += sprintf(line, " %02x", (unsigned char)buf[b + i]);
  36        } else {
  37            line += sprintf(line, "   ");
  38        }
  39    }
  40    if (ascii) {
  41        *line++ = ' ';
  42        for (i = 0; i < len; i++) {
  43            c = buf[b + i];
  44            if (c < ' ' || c > '~') {
  45                c = '.';
  46            }
  47            *line++ = c;
  48        }
  49    }
  50    *line = '\0';
  51}
  52
  53void qemu_hexdump(FILE *fp, const char *prefix,
  54                  const void *bufptr, size_t size)
  55{
  56    unsigned int b, len;
  57    char line[QEMU_HEXDUMP_LINE_LEN];
  58
  59    for (b = 0; b < size; b += QEMU_HEXDUMP_LINE_BYTES) {
  60        len = size - b;
  61        qemu_hexdump_line(line, b, bufptr, len, true);
  62        fprintf(fp, "%s: %s\n", prefix, line);
  63    }
  64
  65}
  66